CN218444167U - Infrared temperature measuring sensor - Google Patents
Infrared temperature measuring sensor Download PDFInfo
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- CN218444167U CN218444167U CN202221408599.9U CN202221408599U CN218444167U CN 218444167 U CN218444167 U CN 218444167U CN 202221408599 U CN202221408599 U CN 202221408599U CN 218444167 U CN218444167 U CN 218444167U
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Abstract
The utility model discloses an infrared temperature measurement sensor, which comprises an infrared temperature measurement module and a high-temperature target, and is characterized in that the high-temperature target is arranged in a temperature-measured environment during temperature measurement, the infrared temperature measurement module is arranged outside the temperature-measured environment and is aligned with the high-temperature target to directly sense the temperature signal of the high-temperature target through infrared radiation, and the temperature value of the high-temperature target is obtained; simultaneously with the heat radiation infrared light path seal between infrared induction module and the high temperature target transmit in a closed passage who avoids environmental disturbance, from this through the high temperature target response measured ambient temperature, the infrared induction module obtains high temperature target temperature signal in closed passage to obtain the ambient temperature by the temperature measurement environment. The utility model provides an infrared temperature sensor does not receive temperature measuring environment dust, and interference such as steam has ensured measuring high accuracy and stability to use cost is low, and it is convenient to change.
Description
Technical Field
The utility model relates to a temperature measurement technique, especially an infrared temperature sensor.
Background
The thermocouple has high temperature measuring precision and convenient use, and is widely used for temperature measurement, but the thermocouple is in contact temperature measurement, so the metal protective sleeve is sleeved outside the temperature sensing element and contacts with a temperature measuring object through the metal protective sleeve, but the metal protective sleeve is still easily damaged, and particularly under the condition of high-temperature environment, the metal protective sleeve and the temperature sensing element inside the metal protective sleeve are easily damaged, and finally the thermocouple product is scrapped. The service life is short due to easy damage, so that the temperature measurement cost by adopting the thermocouple is greatly improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of above-mentioned prior art and providing a thermocouple that replaces contact temperature measurement, and possess the same temperature measurement scene with the thermocouple and the spoilage is low, realize the infrared temperature sensor that low-cost used.
In order to realize the above object, the utility model provides a pair of infrared temperature sensor, including infrared temperature measurement module and temperature measurement cavity, characterized by the temperature measurement cavity constitutes for closed high temperature resistant material, is equipped with the high temperature target in the one end of temperature measurement cavity, infrared temperature measurement module includes infrared sensing element, and infrared sensing element sets up and aims at the high temperature target in the temperature measurement cavity.
In order to avoid the damage of high temperature to the infrared temperature measurement module, a heat insulation ring and a heat insulation filter are arranged between the infrared temperature measurement module and the high-temperature target. Because infrared temperature measurement module is not only kept apart through thermal-insulated circle and high temperature part, redesigns the high temperature light filter at infrared temperature measurement module end, plays thermal-insulated and light filtering's effect for the temperature measurement module does not receive the influence of high temperature, ensures its work normal atmospheric temperature, improves measuring precision and stability greatly. The high-temperature target and the infrared temperature measurement module are isolated in physical heat transfer through the design of the heat insulation ring, so that the measuring instrument can be protected to work at normal temperature, and the running stability and reliability of the measuring instrument are guaranteed; the design of the high-temperature resistant optical filter is used for transmitting high-temperature gas of a measured object to the infrared lens of the measuring instrument, so that the infrared temperature measuring lens and the instrument are protected from working stably.
The utility model provides an infrared temperature measurement sensor, including adopting infrared temperature measurement module and high temperature target, place the high temperature target in by the temperature measurement environment when the temperature measurement, infrared temperature measurement module is placed outside by the temperature measurement environment and is aimed at the high temperature target and directly responds to the temperature signal of high temperature target through infrared radiation, acquires the temperature value of high temperature target; simultaneously with the transmission in the closed channel of avoiding the environmental disturbance of the heat radiation infrared light path seal between infrared temperature measurement module and the high temperature target, from this through the high temperature target response measured ambient temperature, infrared temperature measurement module obtains high temperature target temperature signal in closed channel to obtain the ambient temperature by the temperature measurement environment.
The utility model provides an infrared temperature sensor seals the transmission in a confined temperature measurement cavity of avoiding the environmental disturbance through heat radiation infrared light path between infrared temperature measurement module and the high temperature target, the temperature measurement cavity seals infrared temperature measurement module and high temperature target respectively and forms the temperature measurement cavity at the both ends of a pipeline, and the high temperature target is taken off the mode with pipeline one end accessible and is connected, and the infrared sensing element of infrared temperature measurement module aligns the other end that the high temperature target packaged at the pipeline, forms the enclosure space that does not receive the influence of heat flow, does not receive dust particle, steam influence in ambient temperature and the environment between infrared temperature measurement module and high temperature target by this, makes the heat radiation infrared light path transmit in this enclosure space's pipeline, the pipeline can constitute by high temperature resistant material.
The utility model provides a pair of infrared temperature sensor designs into a confined temperature measurement cavity that comprises high temperature resistant material with infrared measuring's environment for infrared temperature measurement work does not receive external environment dust in confined cavity the inside, and interference such as steam has ensured measuring high accuracy and stability from this.
Because the high-temperature target is frequently contacted with an object for measuring temperature, the high-temperature target is made of a high-temperature-resistant material, a corrosion-resistant material and a wear-resistant material, the high-temperature target is designed into an easily-consumed piece, when the temperature measuring target is damaged, the high-temperature target only needs to be replaced, and the use cost is greatly reduced.
The utility model provides a pair of infrared temperature sensor, its temperature measurement target design, through chooseing for use different materials, like stainless steel, alloy, pottery etc. according to measurement temperature's needs, different working condition's needs design not unidimensional, different shapes, the temperature measurement target of different volumes, again according to the temperature that volume, heat conduction coefficient etc. obtained the temperature measurement target spot, satisfy the needs of different application scenes. The design of the temperature measuring target has the advantages of low cost and controllable service life. For example: in the cement industry, the protection tube of the thermocouple is often worn out, which results in the whole being scrapped. Through the design of temperature measurement target, can design not unidimensional solid target head just realizes more wear-resisting, reduces the change cycle. Even if the temperature measuring target is damaged, only the temperature measuring target needs to be replaced, the whole instrument does not need to be replaced, and the cost is greatly reduced.
Designing a closed temperature measuring cavity: due to infrared temperature measurement, the biggest problems are that: the middle light path stroke of the measured object and the instrument is interfered by the environment, and the measuring precision can be greatly interfered by water vapor, wind dust, particles and the like in the middle. Therefore, the closed temperature measuring cavity is designed, so that the stroke from the temperature measuring instrument to a temperature measuring point is protected by the temperature measuring cavity and is not interfered by the environment, and the temperature measurement is more accurate and stable.
Temperature measurement target, infrared temperature measurement module, temperature measurement cavity separation design, its advantage lies in: the measurement is more convenient. Different temperature measuring targets are designed according to the requirements of the object to be measured. The temperature measurement cavity is designed to protect the red temperature measurement light path (not limited to a straight light path), and the interference of measurement precision is avoided. The temperature measuring instrument can be configured with different temperature measuring modules according to the requirements of object measurement with different precision and different distances.
The utility model provides a pair of infrared temperature sensor, the advantage of relative thermocouple temperature measurement lies in: the thermocouple temperature measurement is measured by the potential difference formed by the heat conduction of different materials. The accuracy and corresponding time of such measurements is substantially dependent on the material itself; and the infrared temperature measurement precision can achieve higher precision and faster response time under the influence of the external environment. For example, thermocouple response times < 3S and infrared response times < 20mS. The measurement accuracy of the thermocouple is basically dependent on the accuracy of the material itself. The cost of 0.25% accuracy level I is very high. The infrared temperature measurement is not influenced by the environment in a closed environment, and the cost is much lower under the same precision.
Because the design of the thermocouple is integrally designed, the protection tube is scrapped integrally after being worn. It is relative the utility model provides an infrared temperature sensor only needs to change the temperature measurement target can, cost greatly reduced.
Description of the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic sectional structure view of fig. 1.
Wherein: the device comprises an infrared temperature measurement module 1, a flange plate 2, a heat insulation ring 3, a heat insulation optical filter 4, a temperature measurement cavity 5, a high-temperature target 6, a thermal radiation infrared light path 7, a pipeline 8 and an infrared sensing element 9.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Example 1:
as shown in fig. 1 and fig. 2, the infrared temperature measurement sensor provided in this embodiment includes an infrared temperature measurement module 1 and a temperature measurement cavity 5, the temperature measurement cavity 5 is made of a closed high temperature resistant material, a high temperature target 6 is disposed at one end of the temperature measurement cavity 5, the infrared temperature measurement module 1 includes an infrared sensing element 9, and the infrared sensing element 9 is disposed in the temperature measurement cavity 5 and aligned with the high temperature target 6. When the temperature measuring device is implemented, the infrared temperature measuring module 1 and the high-temperature target 6 are sealed through the heat radiation infrared light path 7 and transmitted in the sealed temperature measuring cavity 5 which avoids environmental interference, the temperature measuring cavity 5 is formed by respectively sealing the infrared temperature measuring module 1 and the high-temperature target 6 at two ends of a pipeline 8, the high-temperature target 6 is connected with one end of the pipeline 8 in a detachable mode, and the infrared sensing element 9 of the infrared temperature measuring module 1 is aligned with the high-temperature target 6 and packaged at the other end of the pipeline 8. The high-temperature target 6 can be detachably connected with one end of the pipeline 8, or the high-temperature target 6 can be detachably connected with one end of the pipeline 7 through a thread or a clamping groove structure.
In order to avoid the damage of high temperature to the infrared temperature measurement module 1, a heat insulation ring 3 and a heat insulation filter 4 are arranged between the infrared temperature measurement module 1 and the high temperature target 6. Because infrared temperature measurement module 1 not only keeps apart through thermal-insulated circle 3 and high temperature part, redesign high temperature resistant thermal-insulated light filter 4 at infrared temperature measurement module 1 end, carry out the transmission to measured object high temperature signal to measuring instrument infrared camera lens through high temperature thermal-insulated light filter 4, protect infrared temperature measurement camera lens and instrument stable work, play thermal-insulated and the effect of filtering, make infrared temperature measurement module 1 not receive the influence of high temperature, ensure its work under normal atmospheric temperature, improve measuring precision and stability greatly.
From another perspective, through the design of the heat insulation ring 3, the high-temperature target 6 and the infrared temperature measurement module 1 are isolated by physical heat transfer, so that the electronic components in the infrared temperature measurement sensor provided by the embodiment can be protected to work at normal temperature, and the operation is ensured to be stable and reliable.
In the infrared temperature measurement sensor provided by the embodiment, the infrared temperature measurement module 1 and the high-temperature target 6 are adopted, the high-temperature target 6 is placed in a temperature-measured environment during temperature measurement, the infrared temperature measurement module 1 is placed outside the temperature-measured environment and is aligned with the high-temperature target 6 to directly sense a temperature signal of the high-temperature target 6 through infrared radiation, and a temperature value of the high-temperature target 6 is obtained; meanwhile, a heat radiation infrared light path 7 between the infrared temperature measurement module 1 and the high-temperature target 6 is sealed in a sealed channel for avoiding environmental interference to be transmitted, so that the high-temperature target 6 senses the temperature of the measured environment, and the infrared temperature measurement module 1 obtains a temperature signal of the high-temperature target 6 in the sealed channel, thereby obtaining the environmental temperature of the measured environment; the thermal radiation infrared light path 7 between the infrared temperature measurement module 1 and the high temperature target 6 is sealed in a closed channel which avoids environmental interference for transmission, the infrared temperature measurement module 1 and the high temperature target 6 are respectively sealed at two ends of a pipeline 8, the high temperature target 1 is connected with one end of the pipeline 8 in a detachable mode, an infrared sensing element 9 of the infrared temperature measurement module 1 aligns to the other end of the high temperature target 6 and is packaged in the pipeline 8, therefore, a closed space which is not influenced by heat flow, dust particles and water vapor in the environment and the environment is formed between the infrared temperature measurement module 1 and the high temperature target 6, the thermal radiation infrared light path 7 is transmitted in the pipeline 8 of the closed space, and the pipeline 8 can be made of high temperature resistant materials.
The infrared temperature sensor provided by the embodiment designs an infrared measurement environment into a closed temperature measurement cavity 5 formed by high temperature resistant materials, so that infrared temperature measurement works in the closed cavity without interference of external environment dust, water vapor and the like, and the high precision and stability of measurement are guaranteed.
Because the high-temperature target 6 is frequently contacted with an object for temperature measurement, the high-temperature target 6 is made of a high-temperature-resistant material, a corrosion-resistant material and a wear-resistant material, the high-temperature target is designed into a consumable part, when the temperature measurement target 6 is damaged, only the high-temperature target 6 needs to be replaced, and the use cost is greatly reduced.
The infrared temperature sensor that this embodiment provided, its high temperature target 6's design through selecting for use different materials, like stainless steel, alloy, pottery etc. according to the needs of measuring temperature, the needs of different operating modes design not unidimensional, different shapes, the high temperature target 6 of different volumes, again according to volume, heat conduction coefficient etc. obtain the material selection of high temperature target 6, satisfy the needs of different application scenarios. The high temperature target 6 also has the advantages of low cost and controllable service life. For example: in the cement industry, the protection tube of the thermocouple is often worn out, which results in the whole being scrapped. Through the design of the high-temperature target 6, the solid target heads with different sizes can be designed to be more wear-resistant, and the replacement period is shortened. Only the high-temperature target 6 needs to be replaced even if the high-temperature target is damaged, and the whole instrument does not need to be replaced, so that the cost is greatly reduced.
The design advantage of the closed temperature measuring cavity 5 lies in that: due to infrared temperature measurement, the biggest problems are that: the middle light path stroke of the object to be tested and the instrument is interfered by the environment, and the testing precision can be greatly interfered by water vapor, wind dust, particulate matters and the like in the middle. Therefore, the closed temperature measuring cavity 5 is designed in the embodiment, so that the stroke of the temperature measuring instrument to the temperature measuring point is protected by the temperature measuring cavity 5 and is not interfered by the environment, and the temperature measurement is more accurate and stable.
This embodiment adopts high temperature target 6, infrared temperature measurement module 1, 5 separation design of temperature measurement cavity, and its advantage lies in: the measurement is more convenient. Different high temperature targets 6 are designed according to the requirements of the object to be tested. The temperature measuring cavity 5 is designed to protect the red temperature measuring light path (not limited to a straight light path), and the interference of measuring precision is avoided. The temperature measuring instrument can be configured with different infrared temperature measuring modules 1 according to the requirements of object measurement with different precision and different distances.
As can be seen from the above detailed analysis, the selection of the material of the high temperature target 6 and the material of the high temperature resistant pipe 8 in this embodiment has been made differently according to the requirement of the use environment, and the specific selection of the material is obtained by the skilled person through N experiments in the content of the specification provided in this patent application, and will not be described in detail here, but the following material performance table can be given as a further reference standard in this embodiment.
The infrared temperature sensor provided by the embodiment has the advantages of temperature measurement relative to a thermocouple: the thermocouple temperature measurement is measured by the potential difference formed by the heat conduction of different materials. The accuracy and corresponding time of such measurements is substantially dependent on the material itself; and the infrared temperature measurement precision can achieve higher precision and faster response time under the influence of the external environment. For example, thermocouple response times < 3S and infrared response times < 20mS. The measurement accuracy of the thermocouple is basically dependent on the accuracy of the material itself. The cost of 0.25% accuracy class I is very high. The infrared temperature measurement is not influenced by the environment in a closed environment, and the cost is much lower under the same precision.
Because the design of the thermocouple is integrally designed, the protection tube is scrapped integrally after being worn. It is relative the utility model provides an infrared temperature sensor only needs to change the temperature measurement target can, cost greatly reduced.
Material selection of the high-temperature target 6: according to the temperature measuring scene and the requirement of the temperature measuring range, different temperature measuring target materials can be adopted. Such as: stainless steel material: can resist temperature of about 800-1100. Such as 304, 316L,310S, etc
Stainless steel 304:
grade: 304. date (yyy. Mm. Dd): 2021.05.17
Alloy materials: high temperature resistance is about 1000-1300 ℃. For example, NH11, NH12, NH13, such as NH13 alloy:
ceramic material: can resist temperature of 1300-1600 DEG C
Such as: 99% alumina (alumina/Al 2O 3) ceramic product
The material components are as follows: temperature resistance and heat conduction coefficient:
。
Claims (5)
1. the utility model provides an infrared temperature sensor, it includes infrared temperature measurement module (1) and temperature measurement cavity (5), characterized by temperature measurement cavity (5) constitute for closed high temperature resistant material, are equipped with high temperature target (6) in the one end of temperature measurement cavity (5), infrared temperature measurement module (1) includes infrared sensing element (9), and infrared sensing element (9) set up in temperature measurement cavity (5) and aim at high temperature target (6).
2. The infrared temperature measurement sensor according to claim 1, wherein a heat insulation ring (3) is provided between the infrared temperature measurement module (1) and the high temperature target (6).
3. An infrared temperature measurement sensor according to claim 1 or 2, characterized in that a heat insulation filter (4) is arranged between the infrared temperature measurement module (1) and the high temperature target (6).
4. An infrared temperature sensor according to claim 1 or 2, characterized in that the infrared temperature measuring module (1) and the high temperature target (6) are sealed and transmitted in a sealed temperature measuring cavity (5) for avoiding environmental interference through a thermal radiation infrared light path (7), the temperature measuring cavity (5) is formed by respectively sealing the infrared temperature measuring module (1) and the high temperature target (6) at two ends of a pipeline (8), the high temperature target (6) is detachably connected with one end of the pipeline (8), and the infrared sensing element (9) of the infrared temperature measuring module (1) is aligned with the high temperature target (6) and sealed at the other end of the pipeline (8).
5. An infrared temperature sensor according to claim 3, characterized in that the infrared temperature measuring module (1) and the high temperature target (6) are sealed and transmitted in a sealed temperature measuring cavity (5) for avoiding environmental interference through a thermal radiation infrared light path (7), the temperature measuring cavity (5) is formed by respectively sealing the infrared temperature measuring module (1) and the high temperature target (6) at two ends of a pipeline (8), the high temperature target (6) is detachably connected with one end of the pipeline (8), and the infrared sensing element (9) of the infrared temperature measuring module (1) is aligned with the high temperature target (6) and sealed at the other end of the pipeline (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221408599.9U CN218444167U (en) | 2022-06-07 | 2022-06-07 | Infrared temperature measuring sensor |
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| CN202221408599.9U CN218444167U (en) | 2022-06-07 | 2022-06-07 | Infrared temperature measuring sensor |
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| CN218444167U true CN218444167U (en) | 2023-02-03 |
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